IS 14276: Cement bonded particle boards -Specification

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IS 14276 (1995) : Cement bonded particle boards
-Specification [CED 20: Wood and other Lignocellulosic
products]

Jawaharlal Nehru
'Step Out From the Old to the New'

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PROTECTED BY COPYRIGHT

IS 14276 : 1995
Reaffirmed 2009

^

Indian Standard

CEMENT BONDED PARTICLE BOARDS

SPECIFICATION

ICS 79-060-20

© BIS 1995

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

October 1995 Price Group 4

AMENDMENT NO. 1 FEBRUARY 2005

TO

IS 14276:1995 CEMENT BONDED PARTICLE

BOARDS — SPECIFICATION

( Page 2, clause 8.2, second sentence ) — Substitute the following for the
existing'

The moisture content of individual test specimen shall not vary from the mean
moisture content by more than ±3 percent (absolute) '

( Page 2, clause 8.5 ) — - Delete.

[ Page 2, Table 1, Si No. (v) and (vi) ] — Substitute the following for the

existing:

SI No.

Property

Requirement

v)

Modulus of rupture (Mm), N/mm 2
Dry condition
* Wei condition

9 (Average)
5 5 (Average)

7 5 (minimum Individual)
4 8 (minimum Individual)

vi)

Modulus or elasticity (Mm), N/mm z
Dry condition
*Wet condition

3 000 (Average)
2 200 (Average)

2 700 (minimum Individual)
1 900 (minimum Individual)

| Page 3, clause 9.2.1(f) ] — Substitute the following for the existing:

'Three test specimens each for dry and wet condition from each sample
conforming to dimensions as specified in IS 2380 (Part 4) : 1977.'

( Page 4, clause 10.7 ) — Substitute the following for the existing:

10.7 Test for Modulus of Rupture

The average and minimum individual values of modulus of rupture in dry and
wet condition (see Table 1) shall be determined for specimens prescribed in 9.2.1(e)
in accordance with IS 2380 (Part 4) 1977 and shall comply with the
requirements specified m SI No (v) of Table 1 '

Amend No, 1 to IS 14276 : 1995

( Page 4, clause 10.8 ) — Substitute the following for the existing

' 1 0*8 Test for Modulus of Elasticity

The average and minimum individual values of modulus of elasticity in dry and
wet condition (see Table I) shall be determined for specimens prescribed in
9.2.1(f) in accordance with IS 2380 (Part 4) 1977 and shall comply with the
requirements specified tn SI No (vt) of Table i '

(CED20)

Reprography Unit, BIS. New Delhi, India

AMENDMENT NO. 2 AUGUST 2005

TO

IS 14276: 1995 CEMENT BONDED

PARTICLE BOARDS — SPECIFICATION

[ Page 2, clause 8.4 {see also Amendment No, 1 ) j — Insert the following
new clause after 814

8.5 WorkabHit>

The boards shall not crack or split when drilled, sawed or nailed perpendicular
to surface For nailing perpendicular to surface a pre-bore of 0.8 times the
diameter of the nail shaft shall be made/

( CED 20 )

Reprography Unit, BIS, New Delhi, bdi*

AMENDMENT NO. 3 JUNE 2009

TO

IS 14276 : 1995 CEMENT BONDED

PARTICLE BOARDS — SPECIFICATION

K^age 1, clause 4.2) — Substitute the following for the existing:
•Cement conforming to IS 8 1 12 : 1 989 or IS 12269 : 1987 shall be used.'

(Page 5 , Annex A) — Insert the following at the end:
'IS 12269 : 1987 Specification for 53 grade ordinary Portland cement'

(CED20)

Reprography Unit, BIS, New Delhi, India

Wood Products Sectional Committee, CED 20

FOREWORD

This Indian Standard was adopted by the Bureau oflmlian Standards, after the draft finalized
by the Wood Products Sectional Committee had been approved by the Civil Engineering Division
Council.

Cement bonded particle board, which is now being manufactured in our country, is made from a
mixture of wo :> i pirticles and cement This standard is now formulated to provide necessary
guidance to the manufacturers and users of this product.

In the formulation of this standard, considerable assistance has been derived from the following
standards:

ISO 8335 * 1987 'Cement — bonded particle boards — Boards of Portland or equivalent
cement reinforced with fibrous wood particles', issued by International Organization for
Standardization.

BS 5669 Part 4 : 1989 'Particle board : Part 4 Specification for cement bonded particle board 1 ,
issued by British Standards Institute.

The committee responsible for the the preparation of this standard is given at Annex B

For the purpose of deciding whether a particular requirement of this standard is complied with,
the final value, observed or calculated, expressing the tesult of a test or analysis, shall be
rounded off in accordance with IS 2 : I960 'Rules for rounding off numerical values (revised)'.
The number of significant places retained in the rounded off value should be the same as that of
the specified value in this standard.

IS 14276 : 1»5

Indian Standard

CEMENT BONDED PARTICLE BOARDS —

SPECIFICATION

1 SCOPE

1.1 This standard covers the requirements of
cement bonded wood particle boards.

1.2 This standard does not cover particle boards
bonded with synthetic resin adhesives.

2 REFERENCES

2*1 The Indian Standards listed in Annex A are
necessary adjuncts to this standard.

3 TERMINOLOGY

3.1 For the purpose of this standard, the follow-
ing definitions shall apply and for definitions
other than those given below, reference may be
made to IS 707 : 1976.

3.2 Particle

Distinct particle oi fraction of wood or other
lignocellulosic material produced mechanically
for use as the aggregate for a particle board.
This may be in the form of flake, granule,
shaving splinter and sliver as stated below.

3.3 Flake

Specially made ihin particle, with the grain of
the wood essentially parallel to the surface of
the flake, prepared with the cutting action of
the knife in a plane parallel to the giain but at
an angle to the axis of the fibre.

3.4 Granule

Particle in which the length, width and thick-
ness are approximately equal, such as particle
of saw dust.

3.5 Shaving

Thin slice or strip of wood pared off with a
knife, planer or other cutting instrument, the
knife action being approximately along the axis
of the fibre, such as the shavings pioduced in
planing the surface of wood.

3.6 Splinter and Sliver

Particle of nearly square or rectangular cross
section with a length parallel to the gram of at
least four times the thickness.

3.7 Cement Bonded Particle Board

Particle board made from a mixture of wood
particles and portland cement

4 MATERIALS

4.1 Species of wood which do not hinder the
process of setting of cement shall be used.
Suitable additnes such as sodium silicate
conforming lo IS 381 : 1972 and aluminium
sulphate conforming to IS 260; J969 shall be
used to prevert inhibitive effect of setting of
cement when othei species are used.

4.2 Cement conforming to IS 8112
be used,

5 MANUFACTURE

1989 shall

Wood particles for the manufacture of particle
boaids bonded with cement shall be produced
by cutting wood j lto shavings, flakes, splinters
or shvers ot sizes up lo 15 mm in length, 3 mm in
wiiUh and It 3 mm m thickness on a suitable
chipping machine. Particles up to 30 percent by
dry weight shall be blended with requisite quantity
of cement, other chemical additives and water.
The mixtuie shall then be formed into a board.
Boards thus formed shall be stacked in a stac-
king device and then compressed and clamped
inahydiaulic press Boards after compression
shall be allowed to set in a curing chamber in
the clamped condition. Cured boards shall be
allowed to mature for a period of 12 days and
then dried in a drying chamber. Subsequently
boards shall be irimmed to required size.

6 FINISH

6,1 The particle boards shall be of uniform

thickness and density throughout the length and
width of the boards- All particle boards shall
be flat and smooth.

7 DIMENSIONS AND TOLERANCES

7.1 The sues of cement bonded particle boards
shall be as follows -

Length 3 050 mm and 2 440 mm
Width 1 220 mm

NOTE — Any other size as agreed to between the
purchaser and the manufacturer may be
manufactured

IS 14276 : 1995

7.2 Thickness

7*2 J The thickness of cement bonded particle
boards shall be as given below;

6, 8, 10, 12,16, 20, 25, 30, and 40 mm

7.3 Tolerances

7.3.1 The following tolerances for the dimen-
sions shall be permitted.

Length ± 5 mm

Width ±5mm

Thickness
i) Unsanded boards

6 mm to 12 mm ± 1 mm
12 mm to 20 mm ± 1-5 mm
20 mm and more ± 2 mm
ii) Sanded boards
( For all thickness ) ± 0-3 mm
Edge atiaightness 2 mm per 1 000 mm

Squareness 2 mm per 1 000 mm

8 PHYSICAL CHARACTERISTICS

8.1 Density

The average density of the board when tested in

accordance with
1 250 lcg/m>.

10.3 shall not be Jess than

8.2 Moisture Content

The average moisture content of the boards
when determined in accordance with 10-4 shall
not exceed the prescribed limits given in
Table 1. The moisture content of individual
test specimen shall not vary from the mean
percentage by more than ±3 percent

8.3 Water Absorption

The water abscrption of the boards when
determined in accordance with J0.5 shall not
exceed the prescribed hunts given in Tabic I for
2 and 24 h soaking,

8.4 Swelling in Water

The swelling jn thickness, length and width,
when determined in accoidance with 10.6 shaJ]
not exceed the limits given in Table 1.

8.5 Workability

The boards shall not crack or split when
^rilled, sawed oi nailed perpendicular to
surface

Table 1 Requirements of Physical and Mechanical Properties for Cement Bonded Particle Boards

( Clauses 8.2, 8.3, 8.4, 10.1, 10 3 10.4, 10,5, 10.6, 10.7, 10 8, 10.9, 10.10 and 10 11)

SI No. Properly Requirement

i) Density ( Mm ) Icg/m^ 1250

ii) Moisture Content, percent 6 to 12

in) Water absorption ( Max ), percent
2 h soaking
24 h soaking
Swelling in water ( Max ). peicent ( After 2 h soaking )

a) Thicknm

b) Length

c) Width
Modulus of rupture ( Mm ), N/mm 1

Dry condition
♦Wet condition
Modulus of elasticity ( Mm ) N/mm*
TensiJe strength perpendicular to surface ( Mitt ), N/mm 1
a) Diy
tb) Accelerated ageing

Screw withdrawal strength ( Mm ), N
Face

Edge

ix) JpH

•MOR in net condition — Specimens are soked m water at 21 ± 2 C C for a period of 24 h

shall be determined in wet state.
\ Accelerated ageing »- Specimens are boiled in water for a period of 2 h. Aft ei wards they are drjed at 21 ± 2°C

to a moisture content around J2 percent and then tensile strength perpendicular to surface shall be determined.
XpH — Specimens are immersed in waier at 27 ± 2°C for a period of 72 h After removing the specimens, pH

value of the water shall be determined using a/?H meter.

iv)

v)

vi)

VII)

vni)

13
25

20
0-5
0-5

9

3000

0-4
25

J 250
850
11 to 13
Modulus of rupture

IS 14276 : 1955

9 SAMPLING AND INSPECTION
9.1 Scale of Sampling

9.1.1 Lot

In any consignment, all the boards of
the same dimensions and manufactured under
similar conditions of production, shall be
grouped together to consitute a lot.

9.1.1.1 The conformity of a lot to the require-
ments of this standard shall be ascertained on
the basis of tests on boards selected from it.

9.1.2 The number of boards to be selected from
a lot shall be in accordance with the following
Table:

Lot Size

N

Up to 50
51 to 100
101 to 200
201 to 300
301 to 500
501 and above

No. of Boards

n

2
3
4

5

7

10

9.1.2.1 These boards shall be selected at
random ( see IS 4905 ■ 1968 ). In order to ensure
randomness of selection, all the boards in the
lot may be arranged in a serial order and every
rth board may b? selected till the required num-
ber is obtained, r being the integral part of N/n 9
where N is the lot size and n is the sample size

9.2 Test Specimens and Number of Tests

The length, width, thickness and the diagonals
of the boards selected as in 9.1.2 shall bz measu-
red before cutting the boards for taking test
specimens. The straightness of edges shall also
be measured. The lot having been found satis-
factory shall be further tested for physical
characteristics given in 8. For this purpose, the
boards examined according to 9.2.1 and found
satisfactory shall be used.

9.2.1 From each of the board selected follow-
ing test specimens shall be cut out from
portions 150 mm away from the edges for Lests
as specified under 10. The method of prepara-
tion and conditioning of specimens shall be as
specified in IS 2380 ( Part 1 ) : 1977.

a) For Determination of Density

Three test specimens from each sample,
each of size 150 mm x 75 mm x full thick-
ness of board. Specimens of other sizes
may be used when deemed necessary.

b) For Determination of Moisture Content

Three test specimens from each sample,
each of size 150 mm x 75 mm x full
thickness of board. Specimens of other
sizes may be used when deemed necessary.

c) For Water Absorption

Three test specimens of size 300 mm x
300 mm in full thickness of board from
each sample.

d) For Swelling in Water

Three test specimens of size 200 mm x
100 mm in full thickness of board from
each sample.

e) For Modulus of Rupture

Three test specimens each for dry and
wet condition from each sample confor-
ming to dimensions as specified in
IS 2380 ( Part 4 ) : 1977.

fj For Modulus of Elasticity

Three test specimens from each sample
conforming to dimensions specified
in IS 2380 ( Part 4 ) : 1977.

g) For Tensile
Surface

Strength Perpendicular to

Three test specimens each for dry and
accelerated ageing test from each sample
of size 50 mm x 50 mm in full thickness
of material.

h) For Screw Withdrawal Strength

Three test specimens from each sample of
size 150 mm x 75 mm in full thickness
of material.

j) For pH Value

Three test specimens from each sample
of size 150 mm x 75 mm in full thick,
ness of matenaf. Other sizes may be use^
when deemed necessary.

9.3 Criteria for Conformity

A lot shall be considered as conforming to the
requirements of this specification, if the sample
and test specimens pass the requirements
prescribed in 10.

9.3.1 In case of failure, double the number of
samples shall be taken from the lot for testing.
The lot shall be considered to have passed if all
these samples conform to the requirements
specified in 10.

3

IS 14276 : 1995

10 TESTING OF SAMPLES

10.1 The samples and test specimens shall be
tested as given in 10.2 to 10.11 and shall
conform to the requirements prescribed in 8
and Table 1.

10.2 Accuracy of Dimensions of Boards

The accuracy of dimensions ofboaids shall be
measured as specified in IS 2380 ( Part 2 ) 1977 .
All the samples selected in accordance with
9.2.1 shall be measured for straightness of
edges, squareness of boards, length, width and
thickness.

10.3 Test for Density

The average density of the board shall be detei-
mined for specimens prescribed in 9.2.1 fa) in
accordance with IS ^380 ( Part 1 ) 1977 and
shall comply with requirements specified in
SI No (l) of Table 1.

10.4 Test for Moisture Content

The average moisture content of boaids shall be
determined for specimen*, presci ibed in 9.2.1 (b)
in accordance with ]S 2380 ( Part 3 ) 1977 and
shall comply with the requirements specified
in SI No. (ii) of Table 1.

10.5 Test for Water Absorption

The average water absorption shall be deter-
mined for specimens prescribed in 9.2.1 (c) in
accordance with IS 2380 ( Part 16 ) : 1977 and
shall comply with the requirement specified
in SI. No. (in)of Table I

10.6 Test for Swelling in Water

The swelling in thickness, length and width
shall be determined for specimens prescribed in
9.2.1 (d) in accoidance with IS 2380 ( Part 17 ) :
1977 and shall comply with the requirement
specified in SI No. (iv) of Table I

10.7 Test for Modulus of Rupture

The average of modulus of luptuie in diy and
wet condition ( see Table 1 ) shall be determined
for specimens prescribed in 9.2.1 (e) in accord-
ance with IS 2380 ( Part 4 ) : J 977 dnd s>hall
comply with the requirements specified in SI No.
(v) of Table 1.

10.8 Test for Modulus of Elasticity

The average modulus of elasticity shall be deter.
mined for specimens prescribed in 9.2.1 (f) in
accordance with IS 2380 ( Part 4 ): 1977 and
shall comply with the requirements specified
in SI No (vi) of Table 1.

10.9 Test for Tensile Strength
Surface

Perpendicular to

The average tensile stiength prependicular to
surface in dry and accelerated ageing test ( see
Table 1 ) shall be determined for specimens
prescribed in 9.2,1 (g) in accordance with
IS 2380 ( Part 5 ) * 1977 and shall comply with
the lequirements specified in SI No. (vii)
of Table I

10.10 Test for Screw Withdrawal Strength

The aveiage screw withdiavval strength shall be
determined for specimens prescribed in 9.2.1 (h)
m accoidance with IS 2380 ( Part 14): 1977
and shall complv with the requirements speci-
fied in SI No. (viii) of Table I.

10.11 Test for pH Value

The aveuge pH shall be dctei mined for speci-
mens prescribed in 9.2.1 (j) \n accordance with
Table I and shall comply with the requirements
specified in SI No. (ix) of Table 1.

11 MARKING

11.1 Each board shall be legibly and indelibly
niaiked or stamped near any of its edges with
the following

a) Name of the manufacturer or trade-mark,
if any;

b) Thickness; and

c) Date of manufacture.

11.2 BIS Certification Marking

11.2.1 The pi oduct may also be marked with
the Standard Mark.

11.2.2 The use of the Standard Mark is governed
by the provisions of Bureau of Indian Standards
Act, 1986 and the Rules and Regulations made
thereundei The details of conditions under
which the licence for the use of Standard Mark
may be granted to manufacturers or producers
may be obtained from the Bureau of Indian
Standards.

IS 14276 : IMS

IS No.

260 : 1969

381 : 1972
707 : 1976

2380

ANNEX A
( Clause 2.1 )

LIST OF REFERRED INDIAN STANDARDS

Title

Aluminium sulphate, non-
ferric (first revision )

Sodium silicate (first revision )

Glossary of terms applicable
to timber technology and
utilization (second revision)

Methods of test for wood
particle boards and boards
from other lignocellulosic
materials:

( Part 1 ) ; 1977 Part 1 Preparation and
conditioning of test specimens
(first revtsion )

( Part 2 ) : 1977 Part 2 Accuracy of dimensions
of boards ( first revision )

( Part 3 ) : 1977 Part 3 Detetermination of
moisture content and density
( first revision )

IS No.

Title

( Part 4 ) : 1977 Part 4 Determination of static
bending strength (first
revision )

( Part 5 ) : 1977 Part 5 Determination of
tensile strength perpendicular
to surface (first revision )

( Part 14 ) : 1977 Part 14 Screw and nail with-
drawal test ( first revision )

( Part 16 ) . 1977 Part 16 Determination of
water absorption (first
revision )

( Part 17 ) : 1977 Part 17 Determination of
swelling in water (first
revision )

Methods for random sampling

4905 : 1968
8112. 1989

43 grade ordinary portland
cement (first revision )

fS 14271 : 1995

Chairman
t>R P M. Ganapathy

ANNEX B

( Foreword )

COMMITTEE COMPOSITION

Wood Products Sectional Committee, CED 20

Representing

Indian Plywood Industries Research and Training Institute
Bangalore '

Membeis
Shri B S Aswathanarayana

Shri P D Agarwal

Shri V S Singh ( Alternate )

Shri K K Baruah

Shri T K< Das ( Alternate )

Maj S S. Bisht

Shri B. B Narula ( Alternate j

Shri N. M Chachan

ShRi B B Roy ( Alternate )

Shri A K Chatterjee

Shri O P Sharma ( Alternate )
Shrt P. G Deshmukh

Shri P L Nag arse khar ( Alternate )
Shri Harish Khaitan

Shri J I- Bothra (Alternate )
Shri A K. Kaderkutty

Superintending Engineer ( S St S )

Executive Engineer ( S & S ) ( Alternate )
Shri Ravinder Kumar

Shri D. K Kanunqo

Dr Yoqesh Chander Nuhawan ( Alternate I
Shrj K. S I aui v

Shri P- T. S Menon ( Alternate )
Shrimati P- Mefnakshi

Lt-Col Pradeep Kumar ( Alternate )
Dr A N NAyar

Indian Plywood Industries Research and Training Institute.
Bangalore

Public Works Department, Utiar Pradesh
Forest Department, Government of Assam, Guwahatj
Directorate of Standardization, Ministry of Defence, New Delhi
Plywood Manufacturers' Association of West Bengal, Calcutta
Directorate General of Technical Development, Nc^v Demi
Indian Institute of Packaging, Bombay
Andaman Chamber of Commerce and Industry Port Blair

The Western Indian Plywood Ltd, Bahapatam
Central Public Works Department, New Delhi

Ministry of Defence ( R&D >, New Delhi

National Test House, Calcutta

)

The Indian Plywood Manufacturing Company Limited. Bombay

Engineci-in-Chief's Braich, Army Headquarters, New Delhi

Prfsident

Executive Director ( Alternate )
Shri S K. Sancankria
Shrj K Sankarakrishnan

Shri S N- Sanyal

Shri N K, Shukla ( Alternate )
Shri S n Sanyal

ShRiK S Shwi A I Alternate)
Shri H V Sarda

Shri Amar Kumar ( Alternate )
Shri F* C. Sharma

ShriN M Walecha {Alternate )
Dr Y Singh

Dr L K Agarwal (Alternate)
Shri J K. Sinha

Shri Rama Chandra ( Alternate )
Dr N Srjram

ShriN. K Upadhyay

Shri M Zafrulla

Shrj Trjdib Sen ( Alternate )

Shri Vinod Kumar,
Dncctor ( CivEngg )

In personal capacity ( C-29 Inderpuri, New Delhi 110012 )
Federation of Indian Plywood and Panel Industry, Nsw Delhi

Assam Plywood Manufacturers 1 Association, Tinsukhia

South Indian Plywood Manufacturers' Association, Tnvandrum

Forest Product* Division, FRI, Dshra Dun

Indian Academy of Wood Scierce, Bangalore

Mangalam Timber Products Ltd, Calcutta

Directorate General of Civil Aviation, New Delhi

Central Building Research Institute ( CSIR ), Roorkee

Ministry of Defence ( DGQA )

NUCHfcM Ltd, Fandabad

Directorate General of Supplies and Disposals, New Delhi

Si la pur Plywood Manufacturers* Ltd, Sitapur

Director General, BIS ( Ex-ofiicio Member)

Secretary
Shri mat i Rachna Sehqal
Assistant Director ( Civ Engg ), BIS

{ Continued on page 7 j

IS 14276 : 1995

( Continued from page 6 )

Wood-Based Building Boards Subcommittee CED 20 : 6

Convener
Dr H. N Jagadeesh

Membeis

Dr L K AgRawal

Shri B Singh ( Alternate )

ShRI A. K CMATFERJIiB

Shri O P« Sharma ( Alternate )
Director

Re pi esenting

Indian Plywood Industries Research and Training Institute,

Bangalore

Central Building Research Institute ( CSIR ) t Roorkee

Directorate General of Technical Development, New Delhi

Indian Plywood Industries Research and Training Institute,
Bangalore

Shri V Sivananda ( Alternate)

Deputy Dirfctor Standards ( Carriage IK ) Ministry of Railways { RDSO ), Lucknow

Assistant Director Standards
{ Carriage III ) ( Alternate )

Shri Arvind Jolly

Shri N K Padhve < Alternate )

Shri K P Kamaluddin

Shri K R B|Rn ( Alternate )

Shri S. S. Kapur

Shri Kaushik Das (Alternate )

Shri M L Lahoti

Shri L. N. Baheh ( Alternate )

Shri A K Lal

Shri A G Dhonuadr ( Alternate )

ShrimatjP- Meenakshi

ColN A Kumar ( Alternate )

ShriP T S Menon

Shri P N Hosamani ( Alternate )

Shri S A. Naqui

Shri A. V V Raghavacharya( Alternate )

Shri K Sankarakrishnan

Shri M V D. Menon {Alternate)

Shri H V. Sarda

Shri Amar Kumar ( Alternate )

Shri K. S Shukla

Dr S. P. Singh ( Alternate )

Lt-Col G B. Singh

Shri B S Naora ( Alternate )

Shri J. K. Sinha

Maj R. N Saigal ( Alternate )

Dr N. Srjram

Shri D Sriram {> Alternate )

Shri P. S. Srivastava

Shri Ravindra Kumar ( Alternate )

Jolly Board Ltd, Bombay

The Western (ndia Plywoods Ltd, Cannanore

Lloyd Insulation ( India ) Pvt Ltd, New Delhi

Assam Hardboard Ltd, Calcutta

National Buildings Organization, New Delhi

Engineerm-Chief's Branch, Army Headquarters , New Delhi

The Indian Plywood Manufacturing Co Ltd, Bombay

Novopan India Ltd, Hyderabad

i

Kutty Flush Doors and Furniture ( Pvt ) Ltd, Madras

Mangalam Timber Products Ltd, Calcutta

Forest Research Institute, Forest Products Division ( Composite
Wood )> Dehra Dun

Andaman Chamber of Commerce and Industry, Port Blair

Ministry of Defence ( DGQA )

Nuchem Limited, Fandabad

Ministry of Defence (R&D)

Central Public Works Department, New Delhi

Superintending Engineer ( S & S }

Executive Engihesr ( S & S ) ( Alternate )
Shri N. K. Upadhyay Directorate General of Supplies and Disposals, New Delhi

Shri Jimmy A. Un walla Godrej & Boyce Manu/actunng Co Ltd, Bombay

Shri S. S. Potnis ( Alternate )
Shri M. Zafrulla Sitapur Plywood Manufacturers' Ltd, Sitapur

Shrj Tridib Sen ( Alternate )

I #f Iftdian Standards

*
, j^A statutory institution established under the fiwr*au 0/ /nt/ton Standards Act, 1986 to
p$4%c harmonious development of the activities of standardization, marking and quality
efflBpHM^fl ©floods and attending to connected matters in the country.

<&■».

BIS lifti the copyright of all its publications. No part of these publications may be reproduced
in any form without the prior permission in writing of BIS. This does not preclude the free use,
in the course oflmplementing the standard, of necessary details, such as symbols and sizes, type
or grade designations. Enquiries relating to copyright be addressed to the Director
f Publications ) t BIS.

Revision of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards
are also reviewed periodically; a standard along with amendments is reaffirmed when such review
indicates that no changes are needed; if the review indicates that changes are needed, it is taken
up for revision. Users of Indian Standards should ascertain that they are in possession of the
latest amendments or editon by referring to the latest issue of - BIS Handbook* and 'Standards
Monthly Addition*.

This Indian Standaid has been developed from Doc ; No. CED 20 ( 5496 )

Amendments Issued Since Publication

Amend No.

Date of Issue

Text Affected

BUREAU OP INDIAN STANDARDS

Headquarters:

Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi L 10002

Telephones : 331 01 31, 331 13 75

Regional Offices :

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg
NEW DELHI 110002

Eastern : 1/14 C. I. T. Scheme VIII M, V. I. P. Road, Maniktola
CALCUTTA 700054

Telegrams : Manaksanstha
( Common to all Offices )

Telephone

J331 01 31
1331 13-73

T37 84 99, 37 85 61
(37 86 26, 37 86 62

f 60 38 43,
|60 20 25,
f235 02 16, 235 04 42

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Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022

Southern : C. I. T. Campus, IV Cross Road, MADRAS 600113

Western : Manakalaya, E9 MIDC, Marol, Andheri ( East )
BOMBAY 400093

Branch : AHMADABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE.
FARIDABAD. GHAZIABAD, GUWAHATI. HYDERABAD. JAIPUR. ICANPUR
LUCKNOW. PATNA. THIRUVANANTHPURAM.

^235 15 19, 235 23 15

r632 92 95, 632 78 58

J632 78 91, 632 78 92

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